JP4751268B2 - Rotary shaping machine - Google Patents

Description

  The present invention relates to a rotary shaping machine attached to a working vehicle such as a tractor.

A rotary shaping machine attached to a working vehicle main machine has been widely used in the past (for example, see Patent Document 1 below).
Specifically, the rotary shaping machine includes a tilling shaft and a tilling portion having a tilling claw provided on the tilling shaft, and the tilling portion so as to shape the soil cultivated by the tilling portion into a ridge shape. And a shaping portion disposed on the vehicle rear side.

However, in the conventional rotary shaping machine, since the soil roughly cultivated by the tillage part is shaped into a cocoon shape by the shaping part, the entire ridge including the upper surface part of the ridge, which becomes a planting region, is formed by rough soil. It was.
Therefore, in order to make the soil in the planting area on the upper surface portion of the ridge finer, it was necessary to separately perform a crushed soil operation on the upper surface portion of the ridge after the ridge formation operation by the rotary shaping machine.
JP 11-289807 A

The present invention, wherein has been made in view of the prior art, the structure simple that can adjust the depth of Harrow layer of the ridge top surface portion serving as planting area is Harrow and can be formed in one step the top surface portion One object is to provide a rotary shaping machine.

In order to achieve the above object, the present invention is a rotary shaping machine attached to a working vehicle main unit, provided on a tilling shaft operatively driven by a PTO shaft provided on the main unit and the tilling shaft. A cultivating part having a cultivated claw, and a shaping part arranged on the vehicle rear side from the cultivating part, the shaping part being a shaping plate for shaping the soil cultivated by the cultivating part into a cocoon shape; A power take-out mechanism for taking out rotational power from a transmission path from the PTO shaft to the tilling shaft, an input portion operatively connected to the power take-out mechanism, and an output portion located below the input portion. And a groundbreaking transmission case that houses the groundbreaking transmission mechanism, and is supported by the groundbreaking transmission case in a state of being operatively connected to the output portion so as to be able to break up the upper part of the ridge shaped by the shaping plate. It was Harrow axis , And a Harrow member provided in the Harrow shaft, the Harrow for transmission case provides a rotary shaping machine, characterized in that it is supported by the input portion around swingably the tilling unit.

  As the earth-crushing member, any material may be used as long as it can crush the ridge shaped by the shaping plate satisfactorily. For example, but not limited thereto, a base portion that is extrapolated to the crushed shaft and a rod portion that extends in the axial direction from a radially outer portion of the base portion, or a radially outer portion with respect to the crushed shaft. A claw-like one provided so as to extend in the direction can be used.

  In the rotary shaping machine according to the present invention, it is preferable that at least a part of the rotation trajectory of the crushed member overlaps the shaping plate in a side view.

As concrete embodiment, the tilling unit includes an input shaft which is operatively connected to the PTO shaft, a gear case for supporting along the input shaft in the vehicle longitudinal direction, in a state of being operatively connected to the input shaft A driven shaft extending along the vehicle width direction, a main beam connected to the gear case so as to rotatably support the driven shaft about an axis, and a tillage transmission connected to the main beam so as to extend in the vertical direction A power transmission mechanism for tillage housed in the power transmission case, and an input portion operatively connected to an outer end portion in the vehicle width direction of the driven shaft and an output portion positioned below the input portion. A power transmission mechanism for tillage, the power tiller shaft supported by the power transmission case so as to extend along the vehicle width direction while being operatively connected to the output portion, and the power tillage nail provided on the power tillage shaft. The The driven shaft is connected to a position-fixed driven shaft operatively connected to the input shaft in a state where the axial position is fixed, and is connected to the position-fixed driven shaft so as not to be relatively rotatable around the axis while being axially movable. The main beam has a fixed beam that supports the fixed position driven shaft, and a movable beam that is connected to the fixed beam so as to be movable in the axial direction. The power take-out mechanism can be exemplified as an embodiment configured to take rotational power from the position-fixed driven shaft.

  In such a specific aspect, the driven shaft includes first and second driven shafts extending left and right across the input shaft, and the main beam supports the first and second driven shafts, respectively. The first and second main beams, the tillage transmission case includes first and second tillage transmission cases connected to the first and second main beams, respectively, and the tillage transmission mechanism includes the first and second main beams. First and second tillage transmission mechanisms respectively housed in first and second tillage transmission cases, wherein the tilling shaft is driven by the first and second tillage transmission mechanisms, respectively. Two tilling shafts may be included, and the first and second tilling shafts may have opposite ends connected to each other by a connecting member.

According to the rotary shaping machine which concerns on this invention, it is provided with the said tilling part and the said shaping part, and the said shaping part from the shaping plate which shapes the soil plowed by the said tilling part into a straw shape, and the said PTO axis | shaft A power take-out mechanism for extracting rotational power from a transmission path leading to the tillage shaft, an input unit operatively connected to the power take-out mechanism, and a transmission mechanism for crushed soil having an output unit positioned below the input unit; A groundbreaking transmission case that houses the transmission mechanism, and a groundbreak shaft supported by the groundbreaking transmission case in a state of being operatively connected to the output unit so as to be able to break the upper part of the ridge shaped by the shaping plate, A ground breaking member provided on the ground breaking shaft, and the ground breaking transmission case is supported by the tilling portion so as to be swingable around the input portion , so that the soil plowed by the tilling portion can be shaped. Part While shaping the ridge shape, the top of the ridge that is shaped by the shaping plate, can be Harrow by the Harrow member provided in the Harrow shaft. Therefore, it is possible to form a cocoon in which the upper surface portion serving as a planting region is crushed in one step.
Further, the depth of the crushed soil layer crushed at the upper part of the ridge shaped by the shaping plate can be adjusted by swinging the transmission case for the crushed soil around the input portion.

  Further, when at least a part of the rotation locus of the crushed member overlaps the shaping plate in a side view, the crushed member is used to form an upper portion of the shed while the ridge is shaped by the shaping plate. Therefore, only the upper surface part which becomes the planting region of the cocoon can be effectively crushed.

Hereinafter, an embodiment of a rotary shaping machine according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a schematic side view of a working vehicle to which a rotary shaping machine according to the present embodiment is applied.

As shown in FIG. 1, the working vehicle 100 in the form of a riding tractor includes a working vehicle main body 50 and a rotary shaping machine 400 connected to a rear portion of the main body 50.
The machine 50 includes a traveling machine body 1, a pair of left and right front wheels 2 and a pair of left and right rear wheels 3 that support the traveling machine body 1, and an engine 4 mounted on a front portion of the traveling machine body 1. In addition, the rear wheel 3 and the front wheel 2 are operatively driven by the power from the engine 4 so as to travel forward and backward. Reference numeral 5 in the figure denotes a hood that covers the engine 4.

The traveling machine body 1 includes an engine frame 13 having a front bumper 11 and a front axle case 12, and left and right machine body frames 15 that are detachably fixed to the rear portion of the engine frame 13 with bolts.
A transmission case 16 is connected to the rear part of the body frame 15 for appropriately shifting the rotation of the engine 4 and transmitting it to the rear wheel 3 and the front wheel 2 via the rear wheel shaft 3a and the front wheel shaft 2a, respectively. ing.
A PTO shaft 18 for outputting the driving force of the rotary shaping machine 400 is provided on the rear end surface of the transmission case 16 so as to protrude rearward.

Furthermore, the working vehicle 100 has a cabin 6 provided on the upper surface of the traveling machine body 1. Inside the cabin 6 are installed a control seat 7 and a control handle (round handle) 8 configured to move the steering direction of the front wheel 2 to the left and right by steering. The steering handle 8 is provided on a steering column 19 located in front of the steering seat 7.
Further, in the cabin 6, a left / right brake pedal 20 for braking the traveling machine body 1 and a power transmission / removal operation from the engine 4 to the front wheels 2 and the rear wheels 3 are performed. A clutch pedal 21, a working machine lifting lever 22 acting as a vertical position setting means for manually changing the height position of the rotary shaping machine 400, and a speed change operation of the output from the PTO shaft 18. To lock the differential mechanism inserted in the power transmission path from the engine 4 to the rear wheel 3. The differential lock pedal 25 is arranged.
A step 9 where an operator gets on and off is provided on the outer side of the cabin 6, and a fuel tank 10 for supplying fuel to the engine 4 is provided on the inner side of the step 9 and below the bottom of the cabin 6. Is provided.

Next, the rotary shaping machine 400 according to the present embodiment will be described in detail.
FIG. 2 is a diagram showing a rotary shaping machine 400 portion in the working vehicle 100 shown in FIG. 1, wherein FIG. 2 (a) is a schematic side view of the rotary shaping machine 400, and FIG. In the rotary shaping machine 400, it is a schematic side view which shows the state which removed some members, such as a cover member.
3 is a schematic perspective view of the rotary shaping machine 400 shown in FIG. 1 as viewed from the upper left and diagonally backward. FIG. 4 is a schematic perspective view of the rotary shaping machine 400 shown in FIG. It is.
FIG. 4 shows a state where a shaping front upper cover 425 and the like which will be described later are removed.

As shown in FIGS. 1 to 4, the rotary shaping machine 400 includes a tilling unit 410 and a shaping unit 420.
The tillage unit 410 has a tilling shaft 411 and a tilling claw 412.
The tilling shaft 411 is configured to be operatively driven by the PTO shaft 18 provided in the machine 50 (here, via a transmission shaft 452 provided with universal joints at both ends).
The tilling claws 412 are provided on the tilling shaft 411.

The shaping unit 420 is disposed on the vehicle rear side from the tilling unit 410 and includes a shaping plate 421, a crushed shaft 422, and a crushed member 423.
The shaping plate 421 is configured to shape the soil G ′ cultivated by the cultivating unit 410 into a cocoon shape.
The crushed shaft 422 is operatively driven by the power from the PTO shaft 18 so that the upper part T of the ridge F shaped by the shaping plate 421 can be crushed.
The crushed member 423 is provided on the crushed shaft 422.

FIG. 5 is a schematic diagram showing a series of operations in which the soil G is cultivated, shaped and crushed by the rotary shaping machine 400 shown in FIG.
In the rotary shaping machine 400, as shown in FIG. 5, the soil G is roughly cultivated by the tillage unit 410, and the soil G ′ roughly cultivated by the tillage unit 410 is shaped into a cocoon shape by the shaping plate 421. Furthermore, the upper part T of the coarse soil ridge F shaped by the shaping plate 421 can be crushed more finely by the crushed member 423 provided on the crushed shaft 422.
Thus, according to the rotary shaping machine 400, the soil G roughly cultivated by the cultivating section 410 is shaped into a cocoon shape by the shaping plate 421, and the coarse soil ridge F shaped by the shaping plate 421 is obtained. Since the upper part T can be crushed more finely by the crushed member 423 provided on the crushed shaft 422, it is possible to form a cocoon in which the upper surface part to be planted is crushed more finely in one step.

The crushing member 423 may be a claw-like member provided so as to extend radially outward with respect to the crushing shaft 422, but in the present embodiment, as shown in FIG. The base portion 423a extrapolated to the crushed earth shaft 422 and the rod portion 423b extending in the axial direction from the radially outer portion of the base portion 423a are provided.
Here, a plurality of the crushed members 423 are attached to the crushed shaft 422.

In the present embodiment, as shown in FIGS. 2B and 5, the rotary shaping machine 400 has at least a part of the rotational locus K1 of the crushed member 423 over the shaping plate 421 in a side view. It is configured to wrap.
By providing such a configuration, the rotary shaping machine 400 shapes the coarse soil G ′ by the shaping plate 421 and simultaneously finely pulverizes the upper part T of the shaped soil F by the ground member 423. Can do. Therefore, since the upper portion T of the heel F can be crushed more finely by the crushed member 423 in the state where the rough soil ridge F is shaped by the shaping plate 421, only the upper surface portion which is the planting region of the heel F is provided. The crushed soil can be effectively crushed, thereby making it possible to obtain cocoons suitable for, for example, sowing and transplanting.

In the present embodiment, the crushed earth shaft 422 is driven by the power branched from the power transmission path from the PTO shaft 18 to the tilling shaft 411.
FIG. 6 is a schematic perspective view of the power take-out mechanism and the crushed earth transmission mechanism portion of the rotary shaping machine 400 as viewed obliquely from the upper right and rear.
As shown in FIG. 6, the shaping unit 420 includes a power take-out mechanism 430, a crushed transmission mechanism 440, and a crushed transmission mechanism 440 in addition to the crushed shaft 422 and the crushed member 423. A power transmission case 450, and the power take-out mechanism 430 is configured to take out rotational power from a power transmission path from the PTO shaft 18 to the tilling shaft 411.

Specifically, the ground breaking power transmission mechanism 440 includes an input unit 441 operatively connected to the power take-out mechanism 430 and an output unit 442 positioned below the input unit 441 (see FIG. 4).
Further, as shown in FIG. 4, the ground breaking shaft 422 is supported by the ground breaking transmission case 450 while being operatively connected to the output portion 442, and the ground breaking member 423 is provided on the ground breaking shaft 422. It has been.
As shown in FIG. 5, the crushed earth transmission case 450 is supported by the tillage unit 410 so as to be swingable around the input unit 441.
FIG. 9 is a perspective view of the crushed earth transmission case 450 supported from the tillage unit 410 so as to be swingable around the input unit 441 from the upper left side.
In the present embodiment, as shown in FIG. 9, the crushed earth transmission case 450 can swing around the input shaft 443 in the input portion 441 and can be adjusted in position on a fixed support member 410a provided in the tillage portion 410. Supported as possible.
Specifically, the fixed support member 410a is provided with long holes (here, two long holes) 410b along the circumferential direction around the input shaft 443.
The crushed earth transmission case 450 is swingable up and down around the input shaft 443, and by a fixing member 410c such as a bolt inserted into the elongated hole 410b provided in the fixing support member 410a. Within the range of the length of the long hole 410b, the position around the input shaft 443 is fixed so as to be adjustable.

By providing such a configuration, the rotary shaping machine 400 can be moved more in the upper part T of the rough soil ridge F shaped by the shaping plate 421 by swinging around the input unit 441 of the earthing transmission case 450. The depth h of the crushed soil layer S finely crushed can be adjusted.
That is, when the crushed soil transmission case 450 is swung downward about the input portion 441, the depth h1 of the crushed soil layer S1 is swung upward about the input portion 441 (for example, FIG. 5). It can be adjusted to be deeper than the depth h2 of the crushed soil layer S2.
Thereby, the ridge F which has the crushed soil layer S of the depth h suitable for the crop to plant can be obtained.

The rotary shaping machine 400 will be described more specifically with reference to FIGS. 1 to 6. The rotary shaping machine 400 is connected to the working vehicle main body (here, the rear part of the transmission case 16) via a link mechanism 300. Are connected to be able to swing up and down.
In the present embodiment, the link mechanism 300 is a three-point link mechanism including a top link 320 and a pair of left and right lower links 311 and 312.

The pair of left and right lower links 311 and 312 has a front end connected to the left and right side surfaces of the rear portion of the transmission case 16 via a lower link pin 313, and a rear end connected to the lower end of the hitch frame 310. The lower hitch pins 314 are connected.
The top link 320 has a front end connected to a top link hitch 210 at the rear of the working machine lifting mechanism 200 described below via a top link pin 211, and a rear end connected to the front end of the upper link frame 401 below with an upper hitch pin 321. It is connected through.
Specifically, the top link 320 is configured to be expanded and contracted by the rotation of the turnbuckle 320a so that the length of the top link 320 can be changed and adjusted.

On the rear upper surface of the transmission case 16, a hydraulic working machine lifting mechanism 200 for lifting and lowering the rotary shaping machine 400 is detachably attached.
The hydraulic working machine lifting mechanism 200 includes a single-acting lift control hydraulic cylinder (not shown) that acts as a lift actuator, and a pair of left and right lift arms that are operatively rotated by a piston in the hydraulic cylinder. 221 and 222.

The left lift arm 221 in the traveling direction is connected to the corresponding left lower link 311 via a left lift rod 231.
The lift arm 222 on the right side in the traveling direction is connected to the corresponding lower link 312 on the right side via a right lift rod 232.
That is, in the rotary shaping machine 400, the pair of left and right lift arms 221 and 222 are swung around the rotation axis along the vehicle width direction by the lift control hydraulic cylinder, so that the top link 320 and the pair of lift arms The lower links 311 and 312 are moved up and down around the front end portions.

A double-acting tilt control hydraulic cylinder 240 that acts as a tilting actuator for tilting the rotary shaping machine 400 relative to the main unit 50 is inserted in the right lift rod 232.
That is, in the rotary shaping machine 400, the piston rod 241 of the tilt control hydraulic cylinder 240 advances and retreats, whereby the other of the pair of left and right lift rods 231 and 232 (here, the left lift rod 231) and the other lift. The connecting point with the lower link 311 corresponding to the rod 231 (that is, the position displaced from the center position in the vehicle width direction of the rotary shaping machine 400 to one side) is used as a fulcrum Q to tilt.

In FIG. 7, the expanded sectional view of the power transmission mechanism part for tillage of the said tillage part 410 is shown.
In addition to the tilling shaft 411 and the tilling claw 412, the tilling unit 410 includes an input shaft 413, a gear case 414, a driven shaft 415, a main beam 416, a tilling transmission case 417, and a tilling transmission mechanism 418. And.

In the present embodiment, the tilling section 410 includes the driven shaft 415, the main beam 416, the tilling transmission case 417, the tilling transmission mechanism 418, and the tilling shaft 411.
In such a configuration, for example, the power from the input shaft 413 can be transmitted to the tilling shafts 411 and 411 at both outer ends in the vehicle width direction.
In FIG. 7, one of the pair of configurations (here, the right side in the traveling direction) is illustrated, but the other configuration is that a first transmission pulley 431 described later of the power take-out mechanism 430 is provided. It has substantially the same configuration as the one configuration except that it is not provided.
Therefore, in FIG. 7, it is shown as a representative of the one configuration.

The input shaft 413 is configured to be operatively connected to the PTO shaft 18.
Specifically, the input shaft 413 is configured to be operatively connected to the PTO shaft 18 via the transmission shaft 452, and the power from the engine 4 is transmitted via the PTO shaft 18 and the transmission shaft 452. Is transmitted.

The gear case 414 supports the input shaft 413 along the longitudinal direction of the vehicle, and the driven shafts 415 and 415 extend along the vehicle width direction while being operatively connected to the input shaft 413. .
Specifically, the driven shafts 415 and 415 extend to the left and right with the input shaft 413 sandwiched therebetween, and the power from the input shaft 413 is transmitted by the drive transmission mechanism 350 via the drive transmission mechanism 350. The input shaft 413 is operatively connected.

Specifically, the driven shafts 415 and 415 are integrally connected coaxially, and the drive transmission mechanism 350 includes first and second bevel gears 351 and 352 accommodated in the gear case 414. .
The gear case 414 supports the input shaft 413 so as to be rotatable about the axis, and supports the driven shafts 415 and 415 arranged so as to be orthogonal to the input shaft 413 so as to be rotatable about the axis.
The first bevel gear 351 is externally fitted and fixed to the input shaft 413 while being accommodated in the gear case 414. The second bevel gear 352 is externally fitted and fixed to one of the driven shafts 415 and 415 so as to mesh with the first bevel gear 351 while being accommodated in the gear case 414.

The main beams 416 and 416 are connected to both sides of the gear case 414 in the vehicle width direction so as to rotatably support the driven shafts 415 and 415 about the axis, and the power transmission cases 417 and 417 for tillage are vertically The main beams 416 and 416 are connected to the outer ends in the vehicle width direction so as to extend in the direction.
Specifically, the main beams 416 and 416 are disposed so as to connect the side surfaces of the gear case 414 and the upper ends of the tillage transmission cases 417 and 417, and the driven shafts 415 and 415 are inserted therein. ing.

In the present embodiment, the main beams 416, 416 and the driven shafts 415, 415 are extendable in the vehicle width direction.
As described above, the tilling section 410 can adjust the tilling width by expanding and contracting the main beams 416 and 416 and the driven shafts 415 and 415 in the vehicle width direction.

More specifically, the driven shafts 415 and 415 are fixed to a position-fixed driven shaft 415a that is operatively connected to the input shaft 413 in a state where the position in the axial direction is fixed, and is movable in the axial direction to the position-fixed driven shaft 415a. It has a position movable driven shaft 415b connected so as not to rotate relative to the axis.
Specifically, the position movable driven shaft 415b has a cylindrical member 415b ′, and the inner end of the cylindrical member 415b ′ in the vehicle width direction is the outer end of the position fixed driven shaft 415a in the vehicle width direction. It is externally fitted to the part so as to be slidable in the vehicle width direction and not rotatable relative to the axis.

The main beams 416 and 416 include a fixed beam 416a that supports the position-fixed driven shaft 415a and a movable beam 416b that is connected to the fixed beam 416a so as to be movable in the axial direction.
Specifically, the fixed beam 416a is a hollow member (for example, a horizontally long cylindrical member) in which the position fixed driven shaft 415a can be inserted and the movable beam 416b can be fitted, and the movable beam 416b. Is a hollow member (for example, a horizontally long cylindrical member) in which the position movable driven shaft 415b can be inserted.
The movable beam 416b is slidably fitted in the vehicle width direction outer end portion of the fixed beam 416a in a state where the position movable driven shaft 415b is inserted, and a fixed member BL (for example, , And fixing bolts).

  In the transmission cases 417 and 417 for tillage, the bearing portion 417a at the upper end portion supports the other end portion of the driven shafts 415 and 415 so as to be rotatable about the axis, and the bearing portion 417b at the lower end portion is supported by the tillage shaft 411. , 411 is supported so as to be rotatable about its axis.

The tillage transmission mechanisms 418, 418 are accommodated in the tillage transmission cases 417, 417, and are operatively connected to the outer ends of the driven shafts 415, 415 in the vehicle width direction and the input portion 418a. The output unit 418b is located further downward.
Specifically, the tilling shafts 411 and 411 are configured to be driven by the tilling transmission mechanisms 418 and 418. That is, the tilling shafts 411 and 411 are connected to the driven shaft 415 via the tillage transmission mechanisms 418 and 418 so that the power from the driven shafts 415 and 415 is transmitted by the tilling transmission mechanisms 418 and 418. , 415 are operatively connected.

Specifically, the tillage transmission mechanism 418, 418 includes first and second sprockets 418c, 418d and a chain 418e.
The first sprocket 418c is fitted and fixed to the other end side of the driven shafts 415 and 415, and the second sprocket 418d is fitted and fixed to one end side of the tilling shafts 411 and 411. . The chain 418e is wound around the first and second sprockets 418c and 418d.

The tilling claw 412 is provided on the tilling shafts 411 and 411 so as not to rotate relative to the axis.
Further, the tilling shafts 411 and 411 are supported by the tilling transmission case 417 so as to extend along the vehicle width direction in a state of being operatively connected to the output portion 418b.

  In the present embodiment, the tilling section 410 includes the driven shaft 415, the main beam 416, the tilling transmission case 417, the tilling transmission mechanism 418, and the tilling shaft 411. Since it is necessary to cultivate with the full width of the cultivating part, as shown in FIGS. 4 and 7, the inner ends of the cultivating shafts 411 and 411 are connected to each other via a coupling member 470 such as a coupling having a cultivating claw 412. Are connected so that they cannot rotate relative to each other.

Here, the tilling shafts 411 and 411 are connected to each other through connecting members 470 so as to be movable in the vehicle width direction. By doing so, the tilling shafts 411 and 411 can move in the vehicle width direction as the main beams 416 and 416 and the driven shafts 415 and 415 expand and contract in the vehicle width direction, respectively.
Specifically, each of the first tillage shafts 411 and 411 has an inner end 411a in the vehicle width direction that is externally fitted to a tubular connecting member 470 so as to be slidable in the vehicle width direction and not rotatable relative to the axis. ing. Preferably, the tilling shafts 411 and 411 and the connecting member 470 are fixed by a fixing member BL (for example, a fixing bolt). Further, the tilling claw 412 is provided on the connecting member 470.

In the present embodiment, the power from the input shaft 413 is transmitted to the tilling shafts 411 and 411 at both outer end portions in the vehicle width direction. It is also possible to support a single tillage shaft by means of the transmission case and the bearing plate.
In such a configuration, a configuration of a side drive rotary type that transmits power from the input shaft 413 to a single tillage shaft at one outer end in the vehicle width direction, or power from the input shaft 413 is transmitted. An example of a center drive rotary type configuration that transmits to a single tillage shaft at the center in the vehicle width direction can be given.

As shown in FIGS. 1 to 6, the tilling section 410 includes a tilling cover 419, a tilling depth adjusting frame 461, a gauge ring frame 462, a gauge ring arm 463, and a gauge ring 464 in addition to the above-described configuration. And a tilling depth adjusting shaft 465.
Here, the upper link frame 401 is fixed to the gear case 414 by a fixing member 402 such as a bolt.
The tillage cover 419 includes a tilling upper surface cover 419a disposed so as to cover the rotation trajectory K2 of the tilling claw 412 and a pair of left and right tilling side covers provided at both ends of the tilling upper surface cover 419a in the vehicle width direction. 419b, 419b.

The tilling depth adjusting frame 461 has a front end attached to the main beams 416 and 416 and extends rearward. The gauge ring frame 462 extends in the vehicle width direction, and is connected to the frame body of the rotary shaping machine 400 (here, the upper link frame 401) via the tilling depth adjustment frame 461 so that the position can be adjusted. Yes.
The gauge wheel arm 463 is supported by the gauge wheel frame 462 so as to extend in the vertical direction, and the gauge wheel 464 is supported by the gauge wheel arm 463 so as to be rotatable about an axis along the vehicle width direction. Yes.
Further, the tilling depth adjusting shaft 465 is adjustable to extend and contract between the rear end side of the upper link frame 401 and the gauge ring frame 462, and the tilling depth adjusting is rotated to perform the expanding and contracting adjustment. A handle 465a (see FIG. 1 and the like) is provided.

  In the tillage unit 410 having such a configuration, the tilling depth adjusting handle 465a is rotated, the tilling depth adjusting shaft 465 is expanded and contracted, and the gauge ring 464 is moved up and down, whereby the rotary shaping machine 400 as a whole is As a result, the plowing depth g1 (that is, the height g2 of the hail F) by the plowing claws 412 can be changed manually.

In the shaping unit 420, the power take-out mechanism 430 is configured to take out rotational power from the position-fixed driven shaft 415a in the transmission path from the PTO shaft 18 to the tilling shaft 411 as shown in FIG. Has been.
Specifically, the power take-out mechanism 430 includes first and second transmission pulleys 431 and 432 and a transmission belt 433.
The first transmission pulley 431 is supported by the position-fixed driven shaft 415a so as not to rotate relative to the axis (see FIG. 7), and the second transmission pulley 432 is used for ground breaking described later in the ground breaking transmission mechanism 440. The input shaft 443 is supported so as not to rotate relative to the axis. The transmission belt 433 is wound around the first and second transmission pulleys 431 and 432. Here, the transmission belt 433 is stretched by the tension roller 435 by the biasing force of the biasing member 434.

The power take-out mechanism 430 having such a configuration is configured such that the rotational power from the position-fixed driven shaft 415a is transmitted to the soil-crushing input shaft 443.
Here, the fixed position driven shaft 415a includes a tubular member 415a ′ and a pulley shaft 415a ″ provided with the first transmission pulley 431, and the vehicle width of the tubular member 415b ′. An outer end portion in the direction is fitted on the pulley shaft 415a ′ and is fixed by a fixing member BL (for example, a fixing bolt).

FIG. 8 is a schematic configuration diagram of the crushed transmission case 450 that houses the crushed transmission mechanism 440. FIG. 8 (a) shows a longitudinal sectional view thereof, and FIG. 8 (b) shows a side view thereof. Indicates.
As shown in FIG. 8, the ground breaking transmission mechanism 440 further includes a ground breaking input shaft 443, first and second transmission sprockets 444 and 445, and a transmission chain 446.
The crushed soil input shaft 443 is disposed substantially parallel to the position-fixed driven shaft 415a, and is supported on the upper end side of the crushed soil transmission case 450 so as to be relatively rotatable about an axis.
The first transmission sprocket 444 is supported on the crushed input shaft 443 so as not to rotate relative to the axis, and the second transmission pulley 445 cannot be rotated relative to the crushed shaft 422 around the axis in the output portion 442. It is supported. The transmission chain 446 is wound around the first and second transmission sprockets 444 and 445.

  Further, in the present embodiment, the ground breaking transmission case 450 accommodates the ground breaking transmission mechanism 440 so as to be swingable about the ground breaking input shaft 443, and the ground breaking transmission mechanism 440 includes the ground breaking transmission mechanism 440. Rotational power from the crushed input shaft 443 is transmitted to the crushed soil shaft 422 while the transmission case 450 can swing around the crushed soil input shaft 443.

As shown in FIGS. 1 to 4, the shaping unit 420 includes a shaping frame 424 that supports the shaping plate 421 in addition to the shaping plate 421, the earth breaking shaft 422, and the earth breaking member 423.
In the present embodiment, the shaping frame 424 includes a support arm 424a supported by the tillage unit 410, a tool bar 424b supported by the support arm 424a so as to extend in the vehicle width direction, and a vehicle of the tool bar 424b. A pair of left and right strut frames 424c and 424c are supported at both ends in the width direction so as to be adjustable in position in the vehicle width direction.
Specifically, the support arm 424a has a front end attached to a vehicle width direction center of a support beam 416e disposed substantially parallel to the main beam 416 on the vehicle rear side of the main beam 416 and a rear end. Are integrally connected to the center of the toolbar 424a in the vehicle width direction.

The shaping plate 421 is a pair of left and right columns supported by the pair of left and right column frames 424c and 424c, and the position of the pair of left and right column frames 424c and 424c is adjusted in the vehicle width direction with respect to the tool bar 424b. By doing so, the width of the eyelid F to be shaped can be adjusted.
In the present embodiment, the pair of left and right shaping plates 421 and 421 respectively cultivate the soil facing the tilling claws 412 at the rear of the outer end of the tilling shaft 411 provided with the tilling claws 412. First shaping portions 421a and 421a for moving inward, and a second extending from the inner end portion in the vehicle width direction of the first shaping portion 421a to the rear of the vehicle so that the upper end portion is inclined inward from the lower end portion. Forming portions 421b and 421b.

Specifically, the pair of shaping plates 421 and 421 are connected to the pair of column frames 424c and 424c via connecting members 421c and 421c, respectively. Here, the connecting members 421c and 421c are respectively inserted into box-shaped portions provided at the lower ends of the pair of column frames 424c and 424c, and are fixed by fixing members such as bolts.
Further, soil adhesion preventing plates 421b ′ and 421b ′ (for example, plastic plates) are provided on the inner surfaces of the second forming portions 421b and 421b, respectively.

In addition to the above-described configuration, the shaping unit 420 covers the rear surface of the shaping front part upper surface cover 425 disposed so as to cover the rotation locus K1 of the crushed member 423 and the rotation locus K1 of the crushed member 423. And a shaping rear upper surface cover 426 arranged as described above.
In the present embodiment, the shaping front upper surface cover 425 has a rear end portion 425a integrally connected to the tool bar 424b, and a front end portion 425b is disposed on the upper surface of the tilling upper surface cover 419a.
The shaped rear upper cover 426 is rotatably connected to the tool bar 424b via a pivot shaft 424b ′ provided along the vehicle width direction.

In addition, a soil adhesion preventing plate 426b ′ (for example, a plastic plate) is provided on the inner surface of the shaping rear upper surface cover 426.
The soil adhesion preventing plate 426b ′ is arranged so that the shaping rear upper surface cover 426 and the second shaping portion are arranged when the pair of left and right support columns 424c, 424c are adjusted in the vehicle width direction with respect to the tool bar 424b. It is possible to advance and retreat in the vehicle width direction so as to cover the upper part of the rotation locus K1 of the crushed member 423 between 421b and 421b. Here, the soil adhesion preventing plate 426b ′ is a pair of extension plates 426b ″ and 426b ″ provided at both ends in the vehicle width direction, and a pair of extension plates 426b ″ having elongated holes M extending in the vehicle width direction. , 426b ". The extension plates 426b and 426b ″ are respectively attached to both ends in the vehicle width direction so as to be adjustable in position in the vehicle width direction by fixing members such as bolts inserted through the long holes M. The soil adhesion preventing plate 426b ′ can be advanced and retracted in the vehicle width direction.

Further, as shown in FIG. 3, a pair of left and right hanger frames 427 and 427 extending rearward are extended at the center of the toolbar 424 b in the vehicle width direction.
A pair of left and right hanger mechanisms 480 and 480 are provided between the rear upper surface of the shaped rear upper surface cover 426 and the left and right hanger frames 427 and 427, and the shaped rear upper surface cover 426 includes the hanger. It can be moved up and down around the pivot shaft 424b ′ via mechanisms 480 and 480.

Specifically, each hanger frame 427 is provided with a pressure receiving shaft body 427a that is rotatable about an axis along the vehicle width direction. The pressure receiving shaft body 427a is provided with a through hole in a direction orthogonal to the axis.
Each hanger mechanism 480 includes a hanger rod 481 and a pressure biasing member (here, a compression spring) 482.

The hanger rod 481 has an elongated round bar shape that is slidably inserted into the through hole of the pressure receiving shaft body 427a, and a lower end portion of the hanger rod 481 via a support shaft 481a along the vehicle width direction. The shaping rear upper surface cover 426 is rotatably connected to a bracket 426a provided on the rear upper surface, and has a support member 481b fixed on the lower side and on the upper side of the support shaft 481a. .
The pressure biasing member 482 is externally inserted into the hanger rod 481 so as to be positioned between the support member 481 b and the hanger frame 427.

FIG. 1 is a schematic side view of a working vehicle to which a rotary shaping machine according to the present embodiment is applied. 2 is a view showing a rotary shaping machine portion in the working vehicle shown in FIG. 1, wherein FIG. 2 (a) is a schematic side view of the rotary shaping machine, and FIG. 2 (b) is the rotary shaping machine. It is a schematic side view which shows the state which removed some members, such as a cover member, in the machine. FIG. 3 is a schematic perspective view of the rotary shaping machine shown in FIG. FIG. 4 is a schematic perspective view of the rotary shaping machine shown in FIG. FIG. 5 is a schematic diagram showing a series of operations in which soil is cultivated, shaped and crushed by the rotary shaping machine shown in FIG. FIG. 6 is a schematic perspective view of a power take-out mechanism and a crushed earth transmission mechanism portion of the rotary shaping machine as viewed obliquely from the upper right and rear. FIG. 7 is a developed cross-sectional view of the power transmission mechanism portion for tillage of the tillage portion. FIG. 8 is a schematic configuration diagram of a transmission case for crushed soil that accommodates a transmission mechanism for crushed soil, FIG. 8 (a) shows a longitudinal sectional view thereof, and FIG. 8 (b) shows a side view thereof. FIG. 9 is a perspective view of a state in which the groundbreaking transmission case is supported by the tillage portion so as to be swingable around the input portion, as viewed from the upper left side.

18 PTO shaft 50 Work vehicle main body 400 Rotary shaping machine 410 Tillage part 411 Tillage shaft (first and second tillage shaft)
412 Tillage claw 413 Input shaft 414 Gear case 415 Driven shaft (first and second driven shafts)
415a Position fixed driven shaft 415b Position movable driven shaft 416 Main beam (first and second main beams)
416a Fixed beam 416b Movable beam 417 Tillage transmission case (first and second tillage transmission case)
418 Transmission mechanism for tillage (first and second tillage transmission mechanism)
418a Input part 418b of tillage transmission mechanism Output part 420 of tillage transmission mechanism Shaping part 421 Shaping plate 422 Ground breaking shaft 423 Ground breaking member 430 Power take-out mechanism 440 Ground breaking transmission mechanism 441 Ground breaking transmission mechanism 442 Ground breaking transmission mechanism Output part 450 Power transmission case for crushed soil

Claims (4)

A rotary shaping machine attached to the working vehicle,
A tilling unit having a tilling shaft operatively driven by a PTO shaft provided in the machine and a tilling claw provided on the tilling shaft;
A shaping part disposed on the vehicle rear side from the tillage part,
The shaping unit operates on a shaping plate that shapes the soil cultivated by the tillage unit into a cage shape, a power take-out mechanism that extracts rotational power from the transmission path from the PTO shaft to the tillage shaft, and the power take-out mechanism A ground breaking transmission mechanism having a connected input section and an output section positioned below the input section, a ground breaking transmission case for housing the ground breaking transmission mechanism, and an upper portion of the ridge shaped by the shaping plate A ground breaking shaft supported on the ground breaking transmission case in a state of being operatively connected to the output unit, and a ground breaking member provided on the ground breaking shaft ,
The rotary shaping machine, wherein the groundbreaking transmission case is supported by the tillage portion so as to be swingable around the input portion .   2. The rotary shaping machine according to claim 1, wherein at least a part of the rotation trajectory of the crushed member overlaps the shaping plate in a side view. The tillage unit extends along the vehicle width direction in an operatively connected state with the input shaft operatively connected to the PTO shaft, a gear case that supports the input shaft along the vehicle longitudinal direction, and the input shaft. A driven shaft; a main beam coupled to the gear case so as to rotatably support the driven shaft about an axis; a tillage transmission case coupled to the main beam so as to extend in a vertical direction; and the tillage transmission. A power transmission mechanism for tillage housed in a case, the power transmission mechanism for power tillage having an input portion operatively connected to an outer end portion in the vehicle width direction of the driven shaft and an output portion positioned below the input portion, The tiller shaft supported by the tillage transmission case so as to extend along the vehicle width direction in a state of being operatively connected to the output unit, and the tillage claw provided on the tillage shaft,
The driven shaft is connected to a position-fixed driven shaft that is operatively connected to the input shaft in a state where the axial position is fixed, and is connected to the position-fixed driven shaft so as not to be relatively rotatable around the axis while being axially movable. A position movable driven shaft,
The main beam includes a fixed beam that supports the position-fixed driven shaft, and a movable beam that is connected to the fixed beam so as to be movable in the axial direction.
The rotary shaping machine according to claim 1 or 2 , wherein the power take-out mechanism is configured to take rotational power from the position-fixed driven shaft. The driven shaft includes first and second driven shafts extending left and right across the input shaft,
The main beam includes first and second main beams that support the first and second driven shafts, respectively.
The tillage transmission case includes first and second tillage transmission cases coupled to the first and second main beams, respectively.
The tillage transmission mechanism includes first and second tillage transmission mechanisms housed in the first and second tillage transmission cases, respectively.
The tillage shaft includes first and second tillage shafts driven by the first and second tillage transmission mechanisms, respectively.
The rotary shaping machine according to claim 3 , wherein the first and second tilling shafts are connected to each other at opposite ends by a connecting member.

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